I have a 5yo son who had seasonal alergies (itchy on his torso, face, eyes), asthma, and red bumps on his tushy. He immune system is just sensitive, his mom had it worse when she was a kid.
This has been affecting his quality of life. Itching interferes with his sleep, which makes him cranky, it is a downward spiral. About 6 weeks ago, I decided to experiment and see if there is anything I could do to help.
6 weeks later, he is almost itch-free. The only thing that still ocassionally bothers him is his eyes.
The treatment that worked was replacing all beauty products with no-alergen versions, thoroughly cleaning him in the salt bath every night, and applying moisturizer afterwards. I am not sure what part of the treatment was the key, I do not want to mess with success.
Every night, he takes a lukewarm bath before bed. I make the bath water salty with himalayian salts. Other salts might work too, this is just what we had lying around when I started. There, he cleanses his eyes by going under water with a snorkel, and keeping them open under water for a bit. This does not work perfectly, his eyes are still a bit itchy after, but it helps.
Then I soap all the itchy parts, torso, face, tushy, and really clean them well.
After bath, he gets a moisturizer treatment all over. And we are done!
I've found the non-alergenic products by going to Environmental Working Group's Cosmetics Database, and searching for products that have zero hazard score. We ended up with Kiss My Face soap, a hemp-based moisturizer, and California Baby shampoo.
His body itches are completely gone. He still gets red cheeks by the end of the day, that are gone by next morning. Tushy bumps are almost non-existent. The only remaining itch is his eyes, and even those are a lot better.